Math, asked by sekhaf, 1 year ago

there are 18 students including boys and girls . if each boys plant 4 trees and each girl plant 5 trees. the total no. they plant the trees is 78. then find the no. of boys and girls

Answers

Answered by holatingomani
2

Let number of boys be x, girls be y

From question:

x+y=18

4x+5y=78

Boys=12,girls=6

Attachments:

hafeezhtech: yea you did other way a around
sekhaf: yes you are right
hafeezhtech: you subtracted in numerator instead of denominator
sekhaf: how did you get 72
sekhaf: please
holatingomani: By multiplying the first equation with -4
hafeezhtech: x+y )*-4
hafeezhtech: (x+y = 18)*-4
holatingomani: Yes
hafeezhtech: :)
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